NSC 3319 Lecture Notes - Lecture 26: Brainstem, Solitary Tract, Baroreceptor
10 May 2016
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Visceral motor control: divisions of the ans ( autonomic nervous system, sympathetic. Thoraco-lumbar ( spinal segment - not essential to know ) Cranio-sacral ( spinal segment - not essential to know ) Rest and digest: enteric, somatic v visceral motor, ans is largely an involuntary system, ans output is disynpatic. Symp ( sympathetic gotta learn short hand for this class: pre ganglion is short because the ganglia are near the sc, pns utilizes direct inhibition of target, sympathetic, preganglionic. Synapse chain ganglion/paraverbetral ganglia: preverbetral ganglion, adrenal medulla. Release: ach fast and slow epsp- most, peptide: very slow epsp, postganglionic. Synapse on target: visceral organs, skin, vasculature. Release catecholamines: alpha and beta receptors, ach in sweat glands, parasympathetic, preganglionic. Somata: cranial nerve nuclei 3,8,9,and 10, s2-s4 spinal segments. Sensory nuclei of 9 and 10: visceral afferent terminate in. Aorta vessel walls ( baroreceptors-mechanoreceptors tells us about blood pressure/gases o and co2 )
